Consider the following statements in respect of flexible couplings.
1. The flanges of flexible coupling are usually made of grey cast iron FG200.
2. In the analysis of flexible coupling, it is assumed that the power is transmitted by the shear resistance of the pins.
3. Rubber bushes with brass lining are provided to absorb misalignment between the two shaft.
Which of these statements are correct?
(a) 1,2 and 3 (b) Only 1 and 2
(c) Only 2 and 3 (d) Only 1 and 3